[PATCH] D72002: GlobalISel: Handle llvm.read_register

[Amara Emerson via Phabricator via llvm-commits]

aemerson added a subscriber: dsanders.
aemerson added a comment.

+ @dsanders

Since you're introducing a new opcode for this, can't we implement a `Lower` action? Daniel mentioned a while ago that he also prefers having targets explicitly opt-in to using default lowerings/expansions.


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  https://reviews.llvm.org/D72002/new/

https://reviews.llvm.org/D72002